Finding the Fourth Proportional to 528,061.85, 792,139.34 and 148,985.90

Step by Step Solution

1. Step 1: Write the proportion equation
   528,061.85 : 792,139.34 = 148,985.90 : x
2. Step 2: Convert to fraction form
   528,061.85/792,139.34 = 148,985.90/x
3. Step 3: Cross multiply
   528,061.85x = 792,139.34 × 148,985.90
4. Step 4: Simplify right side
   528,061.85x = 118,017,592,495.31
5. Step 5: Solve for x
   x = 118,017,592,495.31/528,061.85
6. Step 6: Final answer
   x = 223,491.99